tufa

名词 n.
中文释义

英文释义

名词 n.
  1. Calcareous lime deposited by precipitation from a body of water, such as a hot spring. countable,uncountable
    — B.J. Szabo presented the results of a survey of the tufa mounds that border Pyramid Lake indicating that uranium-series methods can be used to approximate the ages of such tufa deposits. In the Pyramid Lake Basin, tufas less than 50,000 years old contain large quantities of excess thorium, and the error in age estimates made using uranium-series methods is not small enough to confirm results from ¹⁴C determinations.
  2. A variety of volcanic rock, tuff. countable,uncountable
    — 1825, "Oliver Oldschool" (Joseph Dennie), John Elihu Hall (editors), The Port Folio, page 426, This again is followed by a bed of stony tufa of a reddish colour, containing fragments of a spongy lava, amphigone, pyroxene, mica, and common lava; and, like the former, traversed by argillaceous veins.

词形变化

tufas plural

词汇关系

衍生词
calc-tufa hypertufa tufaceous tufalike
相关词
travertine

词源

From Italian tufo, from Latin tōfus or tōphus. Doublet of tuff.
0 次浏览 数据来源: Wiktionary